What is the cause of poor performance of Front Service LED Display?

- Jan 25, 2019-

There are many factors that affect the display of the Front Service LED Display, such as brightness, dot pitch, flatness of the screen, attenuation and failure rate of the lamp bead, use environment, and so on.

The effect of pixel pitch on sharpness is very obvious. The smaller the pixel pitch, the finer the picture display. The reduction of pixel pitch must have mature technology as the core support. From the current trend, the reduction of pixel pitch is an inevitable choice for the market. However, relatively speaking, the smaller the pixel pitch, the higher the cost of the input, and the higher the price.

Screen flatness and screen surface reflectance

Front Service LED Display partial bumps or recesses will cause the viewing angle of the Front Service LED Display to have a dead angle, and the surface flatness should be within ±1mm to ensure that the displayed image is not distorted. The Arreda Front Service LED Display passes through the facing panel. And the LED light tube is specially processed to reduce the reflectivity of the LED panel while ensuring the flatness of the surface of the screen, and can also improve the contrast of the Front Service LED Display (the higher the contrast, the easier it is for the human eye to distinguish the light and dark transition in the moving image. process).

Front Service LED Display Grayscale

Gray level refers to the brightness level that can be distinguished from the darkest to the brightest in the single color of the full-color Front Service LED Display. The higher the gray level, the richer the color and the more vivid the color; otherwise, the display color is single. The change is simple. The increase of the gray level can greatly increase the color depth, and the display level of the image color increases geometrically. Alida COB's small-distance Front Service LED Display uses high-quality LED lights, low-brightness and high-gray, clearer and brighter picture, and finer picture quality.

Lamp quality and failure rate

Front Service LED Display is composed of tens of thousands or even hundreds of thousands of red, green and blue LED lights. The LED bead will slowly decay as the usage time increases. The attenuation speed of LED lamp bead brightness is related to LED chip, auxiliary material and packaging process. In general, after 1000 hours and 20 milliamperes of normal temperature lighting test, the attenuation of the red LED lamp bead should be less than 7%, and the attenuation of the blue and green LED lamp bead should be less than 10%. The consistency of red, green, and blue attenuation has a large impact on the white balance of the full-color Front Service LED Display, which in turn affects the display fidelity of the Front Service LED Display. At the same time, the good lamp bead failure rate is low, even if the aging 72 hours failure rate will not be higher than one in ten thousand.